Home / 851,416.60-1,275,375.30-430,929.40

Finding the Fourth Proportional to 851,416.60, 1,275,375.30 and 430,929.40

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Solution

The fourth proportional to 851,416.60, 1,275,375.30 and 430,929.40 is: 645,508.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,416.60 : 1,275,375.30 = 430,929.40 : x
  2. Step 2: Convert to fraction form
    851,416.60/1,275,375.30 = 430,929.40/x
  3. Step 3: Cross multiply
    851,416.60x = 1,275,375.30 × 430,929.40
  4. Step 4: Simplify right side
    851,416.60x = 549,596,712,803.82
  5. Step 5: Solve for x
    x = 549,596,712,803.82/851,416.60
  6. Step 6: Final answer
    x = 645,508.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.